Mom and Dad Scammed

Today, both my parents were called by a number that came up on their phone as Wells Fargo. A man instructed my dad that someone was trying to take out $8,000 from their bank account. This man told my mother to go to the bank and remove the money from their accounts to put it into another bank account to protect it. This man was able to make her a temporary Wells Fargo card and deposit the money straight to him through the Versa Teller. After my mom did this, she called Wells Fargo to see how long until the money would show up in this new account, and they told her that they knew nothing about it. They also told her that because she removed the money herself and deposited it back into the bank via Versa Teller, they could no longer retrieve the money.

I am asking for my parents because they are retired and on a fixed income. If anyone can help, please, it would be greatly appreciated. God bless you!